to crumble
Regular verb: crumble - crumbled- crumbled

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I crumble
you crumble
she crumbles
we crumble
you crumble
they crumble 	I'mcrumbling
you'recrumbling
she'scrumbling
we'recrumbling
you'recrumbling
they'recrumbling	I crumbled
you crumbled
she crumbled
we crumbled
you crumbled
they crumbled	Iwascrumbling
youwerecrumbling
shewascrumbling
wewerecrumbling
youwerecrumbling
theywerecrumbling	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've crumbled
you've crumbled
she's crumbled
we've crumbled
you've crumbled
they've crumbled	I'vebeen crumbling
you'vebeen crumbling
she'sbeen crumbling
we'vebeen crumbling
you'vebeen crumbling
they'vebeen crumbling	I'd crumbled
you'd crumbled
she'd crumbled
we'd crumbled
you'd crumbled
they'd crumbled	I'd been crumbling
you'd been crumbling
she'd been crumbling
we'd been crumbling
you'd been crumbling
they'd been crumbling	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll crumble
you'll crumble
she'll crumble
we'll crumble
you'll crumble
they'll crumble 	I'll be crumbling
you'll be crumbling
she'll be crumbling
we'll be crumbling
you'll be crumbling
they'll be crumbling	I'll have crumbled
you'll have crumbled
she'll have crumbled
we'll have crumbled
you'll have crumbled
they'll have crumbled	I'll have been crumbling
you'll have been crumbling
she'll have been crumbling
we'll have been crumbling
you'll have been crumbling
they'll have been crumbling	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd crumble
you'd crumble
she'd crumble
we'd crumble
you'd crumble
they'd crumble 	I'd be crumbling
you'd be crumbling
she'd be crumbling
we'd be crumbling
you'd be crumbling
they'd be crumbling	I'd have crumbled
you'd have crumbled
she'd have crumbled
we'd have crumbled
you'd have crumbled
they'd have crumbled	I'd have been crumbling
you'd have been crumbling
she'd have been crumbling
we'd have been crumbling
you'd have been crumbling
they'd have been crumbling	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to crumble 	 	crumble
Let's crumble
crumble 	 	

Participle 	
Present 	Past 	 	 	
crumbling	crumbled